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SMC Series RF Connectors

SMB Connector

RF Connectors > SMC Series RF Connectors

Description

The SMC name derives from SubMiniature C (the third subminiature design). The SMC design was developed in the 1960’s. SMC has threaded coupling with 10-32 threads. Available in 50 & 75 Ω impedance. Utilizes die cast components on non-critical areas to provide a low cost solution.

Features & Benefits

  • Broadband performance with low reflection DC to 10 GHz provides low cost connector combined with high quality.
  • Conforms to the interface dimensions of MIL-STD-348 provides intermatability with other connector suppliers. Offers customer second source.
  • 10-32 screw-on (threaded) coupling mechanism allows performance to 10GHz with low reflection.
  • Right Angle connectors available in one piece construction ensures better performance combined with low cost.

Applications

  • Automotive
  • Automotive (GPS)
  • Base Stations
  • Cable Assemblies
  • Components
  • Instrumentation
  • PC/LAN
  • Process Controls
  • Radio Boards
  • Surge Protection
  • Telecom
  • Test & Measurement
  • Video Systems
SMC Specifications
Impedance 50 Ω
Frequency Range 0-4 GHZ with low reflection; usable to 10.0 GHz
Voltage Rating Sea level: 335 volts
70,000 ft: 85 volts
Dielectric Withstanding Voltage (max.) 750 VRMS RG-196
1000 VRMS for RG-188 type
VSWR RG-196/U series
Straight connector, 1.30 + .04 f (GHz)
Right angle connector, 1.45 + .06 f (GHz)

RG-188/U series
Straight connector, 1.25 + .04 f (GHz)
Right angle connector, 1.35 + .06 f (GHz)
Contact Resistance Center contact:
initial 6.0 mΩ
after environ. 8.0 mΩ

Outer contact:
initial 1.0 mΩ
after environ. 1.5 mΩ

Braid to body:
initial 1.0 mΩ
after environ. N/A
Insulation Resistance 1,000 MΩ minimum
Insertion Loss Straight connectors:
0.30 dB @ 1.5 GHz

Right angle connectors:
0.60 dB @ 1.5 GHz
RF Leakage -55 dB minimum @ 2-3 GHz
Mating 50 Ohm screw-on coupling
per MIL-STD-348
Mating Torque Recommended: 2-3″ lbs.
Maximum: 6.6″ lbs.
80-110 N.cm
Connector Affixment to Cable Braid and Jacket: hex. crimp
Cable Affixment to Center Contact Solder
Contact Captivation All types, except noted otherwise
Cable Retention Equal to breaking strength of cable employed.
Connector Durability 500 mating and unmating cycles min.
Bodies Brass per QQB-626 or zinc per ASTM B86-71, as specified, nickel or gold plated as listed
Center Contacts Female: beryllium copper, gold plated.
Male: brass or beryllium copper, gold plated
Outer Contact Nickel or gold plated as listed
Crimp Ferrules Annealed copper alloys
Insulator TFE
Temperature Range - 65°C to +165°C
Thermal Shock MIL-STD-202 method 107 condition C
Vibration MIL-STD-202 method 204 condition D
Shock MIL-STD-202 method 213 condition C
Corrosion MIL-STD-202 method 101 condition B